Simultaneous and distinguishable detection of external stimuli such as light and temperature is of great interest for a variety of scientific and industrial applications.Theoretically,an organic semiconductor with low exciton binding energy,low thermal activation energy and good charge transporting property ...
Organic-inorganic hybrid perovskite solar cells (PSCs) have made immense progress in recent years, owing to outstanding optoelectronic properties of perovskite materials, such as high extinction coefficient, carrier mobility, and low exciton binding energy. Since the first appearance in 2009, the effici...
The exciton binding energy and the low-lying exciton states in a type-II broken-gap quantum well structure are studied. The conduction electron and the hole that form the exciton are spatially separated and are each confined by a quantum well. A variation-basis-set approach is proposed in whi...
electrically pumped RLs using other semiconductors and structures have also been reported including AlGaInP multiple quantum well structures138, CdSe quantum dots139, and GaAs-based quantum cascade lasers140. Despite the advantages offered by electrical pumping, such as enhanced energy efficiency, ...
whereRexis the exciton binding energy,nexis the principal quantum number andδdenotes a delta function. The first term describes the continuum state absorption and the second term is for excitonic states. We modelled the absorption (black line,Fig. 1d) accounting for inhomogeneous broadening by convo...
Energy levels of Wannier excitons in $mathrm{G}mathrm{a}mathrm{A}mathrm{s}-{mathrm{Ga}}_{1-x}{mathrm{Al}}_{x}mathrm{As}$ quantum-well structures The values of the binding energies of the ground state and of a few lowlying excited states of these two exciton systems are calculated ...
Pure SWCNTs devices did not exhibit a significant photoelectric effect due to a sufficiently high exciton binding energy32. It was difficult to separate the electron–hole pairs generated by light. However, when ZnTPP was spin-coated, the internal electric field at the heterojunction efficiently ...
We investigated the exciton–phonon couplings and exciton binding energy in CH3NH3PbI3 (MAPbI3) single crystals using temperature-dependent photocurrent (PC) and photoluminescence (PL) spectroscopy. The PC and PL data provide clear evidence of the existence of excitons in orthorhombic-phase MAPbI3....
Reduced exciton binding energy and diverse molecular stacking enable high-performance organic solar cells with VOC over 1.1 V Tingting Dai Jiahao Lu Erjun Zhou Science China Chemistry(2024) Advertisement Nature Communications (Nat Commun)ISSN2041-1723(online) ...
The exciton binding energies are calculated for the small GaAs spheres. The energy levels of the ZnSe spheres are given as functions of the radius and compared with the experiments. 0 被引用 · 0 笔记 引用 One-dimensional hole gas in germanium/silicon nanowire heterostructures Wei LuJie Xiang...